Nacl Brine Preparation from Distiller Waste and Na2SO4
The purpose of this study is to address the problem of discharge of distiller waste from Solvay process, and at the same time, to realize the production of soda ash from Glauber”s s.alt-natural ores containing sodium sulfate, or industrial byproduct sodium sulfate.Half-saturated and near-saturated brines were prepared by reacting simulated distiller wastes-aqueous solutions containing calcium chloride and sodium chloride, with sodium sulfate.Experimental results show that the dissolution of sodium sulfate controls the reaction rate and the final composition of the brines.Temperature plays a key role in promoting the dissolution of sodium sulfate therefore to the reaction result, especially to the preparation of near-saturated brine.With equivalent sodium sulfate, more than 90 percent of the Ca2+ can be deleted.The precipitate (gypsum or anhydrite) can be used to produce cement or other construction materials.
Distiller Waste Soda Ash Sodium Sulfate Glauber”s salt Brine
Yanmin SHEN Tiangui WANG
School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China
国内会议
北京
英文
545-548
2010-12-18（万方平台首次上网日期，不代表论文的发表时间）